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Method and apparatus of disparity vector derivation and inter-view motion vector prediction for 3D video coding

a technology of disparity vector and motion vector, applied in the field of video coding, can solve problems such as poor coding performan

Active Publication Date: 2017-08-15
HFI INNOVATION INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent text aims to simplify the process of deriving motion vectors (DVs) in video coding to improve the efficiency of 3D video coding. The current practice involves using two DVs to locate a corresponding block in the reference view. The technical effect of this patent is to improve the efficiency of video coding by simplifying the DV / motional vector (MV) derivation process.

Problems solved by technology

Such straightforward techniques would result in poor coding performance.

Method used

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Embodiment Construction

[0027]In the present invention, a unified disparity vector (DV) is used to infer both list0 DV and list1 DV for deriving the inter-view motion vector prediction (MVP) candidate. The unified DV can be inferred using different procedures as described below. The unified DV can be derived from the DVs of neighboring blocks of the current block as shown in FIG. 6 or the unified DV can be derived from depth information of the current block. For example, neighboring blocks A, B and C corresponding to the left neighboring block, the upper neighboring block and the upper-right neighboring block can be used to derive a DV to locate a corresponding block in the reference view. Block D corresponding to the upper-left neighboring block can be used if the DV associated with block C is unavailable.

[0028]According to one embodiment of the present invention, the unified DV derivation procedure checks the DV from list0 of each neighboring block. If the neighboring block has a DV from list0 , the DV i...

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Abstract

A method and apparatus for three-dimensional video coding and multi-view video coding are disclosed. Embodiments according to the present invention derive a unified disparity vector (DV) based on neighboring blocks of the current block or depth information associated with the current block and locate a single corresponding block in a reference view according to the unified DV. An inter-view motion vector prediction (MVP) candidate is then derived for both list0 and list1 from the single corresponding block. List0 and list1 MVs of the inter-view MVP candidate are derived from the single corresponding block located according to the unified DV.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present invention is a National Stage Application of PCT / CN2013 / 084206, filed on Sep. 25, 2013, which claims priority to U.S. Provisional Patent Application Ser. No. 61 / 744,887, filed on Oct. 3, 2012, entitled “The derivation of disparity vector and interview candidate in the 3D or multi-view video coding” and U.S. Provisional Patent Application Ser. No. 61 / 749,458, filed on Jan. 7, 2013, entitled “Methods of simplified disparity vector derivation and inter-view motion vector prediction in 3D or multi-view video coding”. The priority applications are hereby incorporated by reference in their entireties.FIELD OF INVENTION[0002]The present invention relates to video coding. In particular, the present invention relates to disparity vector derivation and inter-view motion vector prediction for 3D video coding.BACKGROUND OF THE INVENTION[0003]Three-dimensional (3D) television has been a technology trend in recent years that is targeted to ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04N19/597H04N13/00H04N19/52H04N19/573H04N19/176
CPCH04N19/597H04N13/0048H04N19/176H04N19/52H04N19/573H04N13/161
Inventor LIN, JIAN-LIANGCHEN, YI-WEN
Owner HFI INNOVATION INC
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